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Old 27-07-2017, 03:23 PM   #9907
emperor2020's Avatar
Join Date: Dec 2007
Posts: 141
Drainage system ask for 20mm la. 16mm easily choke with jelly. If possible try top up or 80% 20mm size.
Hi Gentoro,what U meant try to top up?

First time heard to upsize from 16mm to 20mm

Any difference ,thank
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